What makes the immortal jellyfish extraordinary is that its medusa eventually dies, but when it does, it descends to the ...

Comb jellies can reverse their development from adult to larva, a rare flexibility in animal life cycles that may be an ...

Every day, many dogs, cats and small animals end up in the rescue centers of animal shelters. They all deserve a second ...

which can revert from an adult medusa back to a polyp. This elusive group of animals with flexible life cycles now includes the ctenophore Mnemiopsis leidyi. "The work challenges our understanding ...

The third-largest outbreak in history of the deadly Marburg virus was sparked by a single jump of the pathogen from an animal to humans, preliminary genomic evidence shows. The outbreak began last ...

When life seems a little too serious, there's nothing like animal jokes to make you roar (or hoot or howl) with laughter I’ve been a stand-up and improv comic for 30 years, and I know for a fact ...

The Earth is home to some amazing animals, and many of them are well-known. Everybody knows how quick cheetahs are, how big elephants can grow, and how adorable chipmunks can be. But there are some ...

We can study animals from all over the world thanks to science, but what about those that no longer exist? The list of extinct mammals could go on for ages, but each animal has a unique story. With ...

But what about the rest of the animal kingdom–how do non-human animals understand and respond to death? The answer depends on species, individual, and circumstance. “There’s a wide variety ...

Cute features in babies and animals are more than just amusing—they trigger powerful evolutionary responses that help our species’ survival. Moo Deng, the baby pygmy hippo that has become ...